Crease-resistant film pressing mechanism for thermal shrinkage film production

Abstract

The utility model relates to a thermal shrinkage film production anti-wrinkle film pressing mechanism, which comprises a rolling bin and a thermal shrinkage film, a plurality of driving rollers are arranged in the rolling bin, a mounting frame is fixedly mounted between the front side wall and the rear side wall of an inner cavity of the rolling bin, and a connecting support is slidably mounted in the mounting frame. A guide assembly used for limiting the connecting support to only move up and down is arranged on the rear side wall of the inner cavity of the mounting frame. According to the anti-wrinkling film pressing mechanism for thermal shrinkage film production, two tensioning rollers are arranged, two electric push rods in a feeding assembly are used for controlling the two tensioning rollers to move towards the opposite sides, an asynchronous motor is used for driving a lead screw to rotate, and therefore a threaded sleeve in threaded connection with the outer surface of the lead screw is controlled to drive a connecting support to move downwards; and the two tensioning rollers make contact with the thermal shrinkage film, the thermal shrinkage film conveyed on the transmission rollers is tensioned, so that wrinkles cannot be generated when the tensioned thermal shrinkage film is wound, and the problem that wrinkles are likely to be generated when the thermal shrinkage film is wound is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat shrink film production, in particular to an anti-wrinkle film pressing mechanism for heat shrink film production. Background Art

[0002] In the process of heat shrink film production, the anti-wrinkle pressing mechanism is widely used to carry out anti-wrinkle treatment on various heat shrink films. The shrink film has high puncture resistance, good shrinkage and certain shrinkage stress. It is mainly used in the sales and transportation process of various products to stabilize, cover and protect the products. The shrink packaging not only has a beautiful appearance, but also plays a role in moisture-proof, dust-proof, loose-proof, theft-proof and collection. The anti-wrinkle pressing mechanism is also used in the process of heat shrink film production.

[0003] The Chinese utility model announcement number is CN219078662U, which discloses a wrinkle-proof film pressing mechanism for heat shrink film production, which reduces wrinkles caused by static electricity when the heat shrink film is rolled up. However, in the actual rolling process of the heat shrink film, multiple conveyor rollers are required to drive the heat shrink film to move, and the heat shrink film passing through multiple conveyor rollers will cause insufficient tension, so that wrinkles will also appear in the rolled heat shrink film. Therefore, a wrinkle-proof film pressing mechanism for heat shrink film production is proposed to solve the above problem. Utility Model Content

[0004] In view of the shortcomings of the prior art, the utility model provides an anti-wrinkle film pressing mechanism for the production of heat shrinkable film, which has the advantage of maintaining the tension of the heat shrinkable film during the transmission process, and solves the problem that in the actual winding process of the heat shrinkable film, multiple conveying rollers are needed to drive the heat shrinkable film to move, and the heat shrinkable film passing through multiple conveying rollers will cause insufficient tension, so that the wound heat shrinkable film will also have wrinkles.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a heat shrink film production wrinkle-proof pressing mechanism, comprising a winding bin and a heat shrink film, wherein a plurality of transmission rollers are arranged inside the winding bin;

[0006] An installation frame is fixedly installed between the front and rear side walls of the inner cavity of the winding bin, a connecting bracket is slidably installed inside the installation frame, a guide assembly for limiting the connecting bracket to move only up and down is provided on the rear side wall of the inner cavity of the installation frame, two connecting frames are slidably installed on the connecting bracket, a feeding assembly for controlling the movement of the connecting frames is provided on the connecting bracket, and a tensioning roller is rotatably installed between the front and rear side walls of the inner cavity of the two connecting frames.

[0007] Furthermore, a mounting bracket is fixedly installed on the top of the mounting frame, and an asynchronous motor is fixedly installed on the mounting bracket. One end of the asynchronous motor is fixedly connected to a screw rod with one end passing through and extending into the interior of the mounting frame. One end of the screw rod is rotatably connected to the bottom wall of the mounting frame, and the outer surface of the screw rod is threadedly connected to a threaded sleeve, which is fixedly connected to the back side of the connecting bracket.

[0008] Furthermore, the transmission roller is rotatably installed between the front and rear side walls of the inner cavity of the winding bin, and the heat shrinkable film is located on the outer surface of the transmission roller.

[0009] Furthermore, the guide assembly includes a guide plate and a through slot, the through slot is opened on the back side of the connecting bracket, the guide plate is fixedly installed on the rear side wall of the inner cavity of the installation frame, and the inner wall of the through slot is slidably connected to the outer surface of the guide plate.

[0010] Furthermore, the feeding assembly includes two electric push rods, which are respectively fixedly mounted on the connecting brackets, and the telescopic ends of the two electric push rods are respectively fixedly connected to the opposite sides of the two connecting frames.

[0011] Furthermore, two support bars are fixedly mounted on the connection bracket, and limiting grooves are provided on the backs of the two connection frames, and the outer surfaces of the support bars are slidably connected to the inner walls of the limiting grooves.

[0012] Furthermore, the mounting frame includes a fixing ring and two support plates, the support plates are fixedly mounted on the bottom of the fixing ring and the top of the mounting frame, and the fixing ring is fixedly mounted on the outer surface of the asynchronous motor.

[0013] Furthermore, a circular groove is provided inside the installation frame, a bearing is fixedly installed on the inner peripheral wall of the circular groove, and the bearing is fixedly installed on the outer surface of the screw rod.

[0014] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0015] The anti-wrinkle pressing mechanism for heat shrink film production is provided with two tensioning rollers, which realizes that the two tensioning rollers are controlled to move to opposite sides by using two electric push rods in the feed assembly, and the lead screw is driven to rotate by using an asynchronous motor, so as to control the threaded sleeve threadedly connected to the outer surface of the lead screw to drive the connecting bracket to move downward until the two tensioning rollers are in contact with the heat shrink film, so as to tension the heat shrink film transmitted on the transmission roller, so that wrinkles will not be generated when the tensioned heat shrink film is rolled up, thereby solving the problem that wrinkles are easily generated when the heat shrink film is rolled up, and enhancing the practicality of the anti-wrinkle pressing mechanism for heat shrink film production. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 It is a cross-sectional view showing the installation frame and the connecting bracket of the utility model structure;

[0018] Figure 3 It is a three-dimensional schematic diagram of the structural connection bracket of the utility model.

[0019] In the figure: 1. Winding bin; 2. Heat shrink film; 3. Drive roller; 41. Mounting frame; 42. Connecting bracket; 43. Guide assembly; 44. Feed assembly; 45. Connecting frame; 46. Tensioning roller; 471. Mounting frame; 472. Asynchronous motor; 473. Screw rod; 474. Threaded sleeve. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] Example 1: Please refer to Figure 1-3 In this embodiment, a heat shrink film production anti-wrinkle film pressing mechanism includes a winding bin 1 and a heat shrink film 2. A transmission roller 3 is rotatably installed between the front and rear side walls of the inner cavity of the winding bin 1. The heat shrink film 2 is located on the outer surface of the transmission roller 3. A plurality of transmission rollers 3 are arranged inside the winding bin 1.

[0022] By adopting the above technical scheme, it is possible to use the two electric push rods in the feed assembly 44 to control the two tensioning rollers 46 to move to opposite sides, and use the asynchronous motor 472 to drive the screw rod 473 to rotate, thereby controlling the threaded sleeve 474 threadedly connected to the outer surface of the screw rod 473 to drive the connecting bracket 42 to move downward until the two tensioning rollers 46 contact the heat shrink film 2, thereby tensioning the heat shrink film 2 transmitted on the transmission roller 3, so that the tensioned heat shrink film 2 will not be wrinkled when it is rolled up, thereby solving the problem that the heat shrink film 2 is prone to wrinkles when it is rolled up.

[0023] Example 2: Please refer to Figure 1-3On the basis of the first embodiment, a mounting frame 41 is fixedly installed between the front and rear side walls of the inner cavity of the winding bin 1, a connecting bracket 42 is slidably installed inside the mounting frame 41, and a guide component 43 for limiting the connecting bracket 42 to only move up and down is provided on the rear side wall of the inner cavity of the mounting frame 41. The guide component 43 includes a guide plate and a through groove, and the through groove is opened on the back of the connecting bracket 42. The guide plate is fixedly installed on the rear side wall of the inner cavity of the mounting frame 41, and the inner wall of the through groove is slidably connected to the outer surface of the guide plate, so as to limit the connecting bracket 42 to only move up and down on the outer surface of the guide plate. Two connecting frames 45 are slidably installed on the connecting bracket 42. Two support bars are fixedly installed on the connecting bracket 42, and limiting grooves are provided on the backs of the two connecting frames 45. The outer surfaces of the support bars are slidably connected to the inner walls of the limiting grooves to facilitate the left and right movement of the supporting connecting frames 45. A feeding assembly 44 for controlling the movement of the connecting frames 45 is provided on the connecting bracket 42. The feeding assembly 44 includes two electric push rods, which are respectively fixedly installed on the connecting bracket 42. The telescopic ends of the two electric push rods are respectively fixedly connected to the opposite sides of the two connecting frames 45 to facilitate the movement of the two connecting frames 45. Tensioning rollers 46 are rotatably installed between the front and rear side walls of the inner cavities of the two connecting frames 45.

[0024] By adopting the above technical solution, it is possible to control the connecting bracket 42 to move downward on the outer surface of the guide plate, and then start the two electric push rods in the feeding assembly 44, so as to control the two connecting frames 45 to move toward opposite sides, and then the moving connecting frames 45 drive the tensioning rollers 46 to move synchronously until the two tensioning rollers 46 tension the heat shrink film 2.

[0025] In the implementation of this example, a mounting frame 471 is fixedly installed on the top of the mounting frame 41, and an asynchronous motor 472 is fixedly installed on the mounting frame 471. The mounting frame 471 includes a fixing ring and two support plates. The support plates are fixedly installed on the bottom of the fixing ring and the top of the mounting frame 41. The fixing ring is fixedly installed on the outer surface of the asynchronous motor 472 to facilitate the fixed installation and stable operation of the asynchronous motor 472. One end of the asynchronous motor 472 is fixedly connected to a screw rod 473 with one end passing through and extending into the interior of the mounting frame 41. One end of the screw rod 473 is rotatably connected to the inner bottom wall of the mounting frame 41. A circular groove is opened inside the mounting frame 41, and a bearing is fixedly installed on the inner circumferential wall of the circular groove. The bearing is fixedly installed on the outer surface of the screw rod 473 to facilitate the rotation of the supporting screw rod 473. The outer surface of the screw rod 473 is threadedly connected with a threaded sleeve 474, and the threaded sleeve 474 is fixedly connected to the back side of the connecting bracket 42.

[0026] By adopting the above technical solution, the asynchronous motor 472 on the mounting bracket 471 is started, so that the asynchronous motor 472 drives the screw rod 473 to rotate, thereby causing the threaded sleeve 474 threadedly connected to the outer surface of the screw rod 473 to move downward, thereby causing the moving threaded sleeve 474 to drive the connecting bracket 42 to move.

[0027] The working principle of the above embodiment is:

[0028] When the anti-wrinkle film pressing mechanism for producing heat shrinkable film is used, the asynchronous motor 472 on the mounting frame 471 is started, so that the asynchronous motor 472 drives the screw rod 473 to rotate, thereby causing the threaded sleeve 474 threadedly connected to the outer surface of the screw rod 473 to move downward, so that the moving threaded sleeve 474 drives the connecting bracket 42 to move downward synchronously on the outer surface of the guide plate, and then the two electric push rods in the feeding assembly 44 are started, so as to control the two connecting frames 45 to move to opposite sides, and then the moving connecting frames 45 drive the tensioning rollers 46 to move synchronously until the two tensioning rollers 46 tension the heat shrinkable film 2.

[0029] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A heat shrink film production wrinkle-proof film pressing mechanism, comprising a winding bin (1) and a heat shrink film (2), characterized in that: A plurality of transmission rollers (3) are arranged inside the winding bin (1); A mounting frame (41) is fixedly installed between the front and rear side walls of the inner cavity of the winding bin (1); a connecting bracket (42) is slidably installed inside the mounting frame (41); a guide component (43) is provided on the rear side wall of the inner cavity of the mounting frame (41) for limiting the connecting bracket (42) to move only up and down; two connecting frames (45) are slidably installed on the connecting bracket (42); a feeding component (44) for controlling the movement of the connecting frame (45) is provided on the connecting bracket (42); and a tensioning roller (46) is rotatably installed between the front and rear side walls of the inner cavity of the two connecting frames (45).

2. The anti-wrinkle film pressing mechanism for heat shrink film production according to claim 1, characterized in that: A mounting frame (471) is fixedly mounted on the top of the mounting frame (41), an asynchronous motor (472) is fixedly mounted on the mounting frame (471), one end of the asynchronous motor (472) is fixedly connected to a screw rod (473) having one end penetrating through and extending into the interior of the mounting frame (41), one end of the screw rod (473) is rotatably connected to the inner bottom wall of the mounting frame (41), the outer surface of the screw rod (473) is threadedly connected to a threaded sleeve (474), and the threaded sleeve (474) is fixedly connected to the back side of the connecting bracket (42).

3. The anti-wrinkle film pressing mechanism for heat shrink film production according to claim 1, characterized in that: The transmission roller (3) is rotatably mounted between the front and rear side walls of the inner cavity of the winding bin (1), and the heat shrinkable film (2) is located on the outer surface of the transmission roller (3).

4. The anti-wrinkle film pressing mechanism for heat shrink film production according to claim 1, characterized in that: The guide assembly (43) comprises a guide plate and a through slot, wherein the through slot is provided on the back side of the connecting bracket (42), the guide plate is fixedly mounted on the rear side wall of the inner cavity of the mounting frame (41), and the inner wall of the through slot is slidably connected to the outer surface of the guide plate.

5. The anti-wrinkle film pressing mechanism for heat shrink film production according to claim 1, characterized in that: The feeding assembly (44) comprises two electric push rods, which are respectively fixedly mounted on the connecting bracket (42), and the telescopic ends of the two electric push rods are respectively fixedly connected to the opposite sides of two connecting frames (45).

6. The anti-wrinkle film pressing mechanism for heat shrink film production according to claim 1, characterized in that: Two support bars are fixedly mounted on the connection bracket (42), and limiting grooves are provided on the backs of the two connection frames (45), and the outer surfaces of the support bars are slidably connected to the inner walls of the limiting grooves.

7. The anti-wrinkle film pressing mechanism for heat shrink film production according to claim 2, characterized in that: The mounting frame (471) comprises a fixing ring and two support plates, wherein the support plates are fixedly mounted on the bottom of the fixing ring and the top of the mounting frame (41), and the fixing ring is fixedly mounted on the outer surface of the asynchronous motor (472).

8. The anti-wrinkle film pressing mechanism for heat shrink film production according to claim 2, characterized in that: A circular groove is provided inside the installation frame (41), a bearing is fixedly mounted on the inner circumferential wall of the circular groove, and the bearing is fixedly mounted on the outer surface of the screw rod (473).

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